./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e8feab662bc73c18f88b757dfbe2687c764aa0043a35ed648ed6332a38c0448d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:44,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:44,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:55:44,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:44,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:44,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:44,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:44,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:44,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:44,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:44,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:44,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:44,278 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:44,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:44,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:44,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:44,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:44,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:44,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:44,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:44,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:44,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:44,284 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:44,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:44,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:44,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:44,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:44,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:44,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:44,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:44,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:44,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:44,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:44,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:44,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:44,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:44,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:44,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:44,292 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:44,292 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8feab662bc73c18f88b757dfbe2687c764aa0043a35ed648ed6332a38c0448d [2023-11-19 07:55:44,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:44,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:44,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:44,648 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:44,648 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:44,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/eca-rers2012/Problem13_label27.c [2023-11-19 07:55:47,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:48,508 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:48,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/sv-benchmarks/c/eca-rers2012/Problem13_label27.c [2023-11-19 07:55:48,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/data/75a0cd00d/0adbecff79ac485599907c402586360b/FLAG83740982f [2023-11-19 07:55:48,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/data/75a0cd00d/0adbecff79ac485599907c402586360b [2023-11-19 07:55:48,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:48,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:48,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:48,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:48,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:48,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:48" (1/1) ... [2023-11-19 07:55:48,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a84be21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:48, skipping insertion in model container [2023-11-19 07:55:48,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:48" (1/1) ... [2023-11-19 07:55:48,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:49,136 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/sv-benchmarks/c/eca-rers2012/Problem13_label27.c[6468,6481] [2023-11-19 07:55:50,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:50,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:50,431 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/sv-benchmarks/c/eca-rers2012/Problem13_label27.c[6468,6481] [2023-11-19 07:55:51,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:51,175 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:51,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51 WrapperNode [2023-11-19 07:55:51,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:51,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:51,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:51,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:51,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,782 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-19 07:55:51,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:51,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:51,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:51,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:51,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:52,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:52,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:52,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:52,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:52,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:52,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_361e0d42-9775-49ac-8962-885396d0d4d2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:52,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:52,635 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:52,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:59,060 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:59,087 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:59,087 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:55:59,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:59 BoogieIcfgContainer [2023-11-19 07:55:59,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:59,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:59,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:59,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:59,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:48" (1/3) ... [2023-11-19 07:55:59,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acbdc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:59, skipping insertion in model container [2023-11-19 07:55:59,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (2/3) ... [2023-11-19 07:55:59,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acbdc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:59, skipping insertion in model container [2023-11-19 07:55:59,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:59" (3/3) ... [2023-11-19 07:55:59,115 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2023-11-19 07:55:59,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:59,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:59,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:59,229 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f131f33, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:59,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:55:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:55:59,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:59,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:59,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:59,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2023-11-19 07:55:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:59,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563031204] [2023-11-19 07:55:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:59,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563031204] [2023-11-19 07:55:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563031204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:59,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:59,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494238607] [2023-11-19 07:55:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:59,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:59,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:59,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:59,763 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:06,108 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2023-11-19 07:56:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:06,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 07:56:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:06,140 INFO L225 Difference]: With dead ends: 3160 [2023-11-19 07:56:06,140 INFO L226 Difference]: Without dead ends: 1983 [2023-11-19 07:56:06,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:06,153 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1058 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:06,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-19 07:56:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2023-11-19 07:56:06,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2023-11-19 07:56:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2023-11-19 07:56:06,329 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 45 [2023-11-19 07:56:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:06,330 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2023-11-19 07:56:06,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2023-11-19 07:56:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:56:06,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:06,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:06,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:06,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:06,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 331802818, now seen corresponding path program 1 times [2023-11-19 07:56:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324293111] [2023-11-19 07:56:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324293111] [2023-11-19 07:56:06,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324293111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:06,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:06,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093005716] [2023-11-19 07:56:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:06,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:06,644 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:11,495 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2023-11-19 07:56:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:11,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-19 07:56:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:11,519 INFO L225 Difference]: With dead ends: 5456 [2023-11-19 07:56:11,519 INFO L226 Difference]: Without dead ends: 3528 [2023-11-19 07:56:11,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:11,534 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:11,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 07:56:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2023-11-19 07:56:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2023-11-19 07:56:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2023-11-19 07:56:11,638 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 110 [2023-11-19 07:56:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:11,640 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2023-11-19 07:56:11,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2023-11-19 07:56:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:56:11,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:11,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:11,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:11,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:11,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash -748334831, now seen corresponding path program 1 times [2023-11-19 07:56:11,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:11,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223396671] [2023-11-19 07:56:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:11,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223396671] [2023-11-19 07:56:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223396671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:11,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:11,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307160601] [2023-11-19 07:56:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:12,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:12,005 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:16,455 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2023-11-19 07:56:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-19 07:56:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:16,495 INFO L225 Difference]: With dead ends: 10232 [2023-11-19 07:56:16,496 INFO L226 Difference]: Without dead ends: 6708 [2023-11-19 07:56:16,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:16,503 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:16,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 07:56:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2023-11-19 07:56:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2023-11-19 07:56:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2023-11-19 07:56:16,678 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 116 [2023-11-19 07:56:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:16,683 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2023-11-19 07:56:16,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2023-11-19 07:56:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-19 07:56:16,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:16,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:16,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:16,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:16,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:16,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1036466844, now seen corresponding path program 1 times [2023-11-19 07:56:16,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:16,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925506994] [2023-11-19 07:56:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:16,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:16,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:16,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925506994] [2023-11-19 07:56:16,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925506994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:16,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:16,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:16,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174095301] [2023-11-19 07:56:16,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:16,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:16,996 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:21,716 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2023-11-19 07:56:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:21,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-11-19 07:56:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:21,778 INFO L225 Difference]: With dead ends: 17443 [2023-11-19 07:56:21,779 INFO L226 Difference]: Without dead ends: 10745 [2023-11-19 07:56:21,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:21,790 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:21,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 07:56:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2023-11-19 07:56:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2023-11-19 07:56:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2023-11-19 07:56:22,167 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 146 [2023-11-19 07:56:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:22,169 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2023-11-19 07:56:22,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2023-11-19 07:56:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:56:22,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:22,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:22,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:22,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:22,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1555116277, now seen corresponding path program 1 times [2023-11-19 07:56:22,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:22,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301094922] [2023-11-19 07:56:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:22,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:22,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:22,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301094922] [2023-11-19 07:56:22,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301094922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:22,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:22,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141470989] [2023-11-19 07:56:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:22,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:22,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:22,757 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:26,505 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2023-11-19 07:56:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:26,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2023-11-19 07:56:26,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:26,548 INFO L225 Difference]: With dead ends: 20549 [2023-11-19 07:56:26,549 INFO L226 Difference]: Without dead ends: 10669 [2023-11-19 07:56:26,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:26,561 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:26,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 07:56:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2023-11-19 07:56:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2023-11-19 07:56:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2023-11-19 07:56:26,889 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 156 [2023-11-19 07:56:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:26,890 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2023-11-19 07:56:26,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2023-11-19 07:56:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-19 07:56:26,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:26,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:26,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:26,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:26,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1267295969, now seen corresponding path program 1 times [2023-11-19 07:56:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:26,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203050272] [2023-11-19 07:56:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:27,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203050272] [2023-11-19 07:56:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203050272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:27,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324404802] [2023-11-19 07:56:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:27,072 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:31,621 INFO L93 Difference]: Finished difference Result 29991 states and 41155 transitions. [2023-11-19 07:56:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-11-19 07:56:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:31,664 INFO L225 Difference]: With dead ends: 29991 [2023-11-19 07:56:31,664 INFO L226 Difference]: Without dead ends: 20111 [2023-11-19 07:56:31,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:31,679 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 892 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:31,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1988 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 07:56:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20111 states. [2023-11-19 07:56:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20111 to 19314. [2023-11-19 07:56:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19313 states have (on average 1.2808470978097655) internal successors, (24737), 19313 states have internal predecessors, (24737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 24737 transitions. [2023-11-19 07:56:32,012 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 24737 transitions. Word has length 170 [2023-11-19 07:56:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:32,013 INFO L495 AbstractCegarLoop]: Abstraction has 19314 states and 24737 transitions. [2023-11-19 07:56:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 24737 transitions. [2023-11-19 07:56:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-19 07:56:32,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:32,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:32,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:32,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:32,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1650019074, now seen corresponding path program 1 times [2023-11-19 07:56:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:32,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067788174] [2023-11-19 07:56:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:32,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-19 07:56:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067788174] [2023-11-19 07:56:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067788174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065980224] [2023-11-19 07:56:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:32,572 INFO L87 Difference]: Start difference. First operand 19314 states and 24737 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)